<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../vue.js"></script>
</head>
<body>
    <div id="app">
        <form action="###">
            <!-- 
                单选框无论个数多少,都是单选,所以data中只需要用一个字符串类型保存当前的value值即可

             -->
             <input type="radio" name="sex" value="男" v-model="sex">男
             <input type="radio" name="sex" value="女" v-model="sex">女
             <input type="radio" name="sex" value="未知" v-model="sex">未知
        </form>
    </div>
    <script>
        Vue.config.productionTip=false;

        const vm=new Vue({
            el:"#app",
            data() {
                return {
                    sex: ""
                }
            }
        })
    </script>
    
</body>
</html>